How to: Inline assembler in C++ (under Visual Studio 2010) -


I am writing a performance-critical, number-crunching C ++ project, where 70% of the time used by 200 lines Goes core module

I want to customize the core using the inline assembly, but I am totally new on this. However, I know in some x86 assembly languages ​​used by GCC and NSM.

All I know is:

Let me codec directions to _asm {} where I want them.

Problem:

  • I have no clue where to start from when my inline assembly comes into playback?

    • You can name names of variables by their name and copy them to register Please. Here is an example from MSDN: 

      int power2 (int num, int power) {__ss {mov eax, num; The first argument mov ecx, get power; Get second argument, SL AX, CL;

    Returns with result in EX = EX * (for the power of 2 CL)} // may be interesting to you too.


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